/*
 * Copyright 2013-2018 Lilinfeng.
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.onecloud.cobbler.server;

import com.onecloud.cobbler.common.Configuration;
import com.onecloud.cobbler.common.codec.NettyMessageDecoder;
import com.onecloud.cobbler.common.codec.NettyMessageEncoder;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.timeout.ReadTimeoutHandler;

import java.io.IOException;


public class NettyServer {

    public void bind(String host, int port) {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        ServerBootstrap serverBootstrap = new ServerBootstrap();
        serverBootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws IOException {
                        ch.pipeline().addLast(new NettyMessageDecoder(1024 * 1024, 4, 4));
                        ch.pipeline().addLast(new NettyMessageEncoder());
                        ch.pipeline().addLast(new ReadTimeoutHandler(20));
                        ch.pipeline().addLast(new HeartBeatRespHandler());
                    }
                });
        try {
            serverBootstrap.bind(port).sync();
        } catch (InterruptedException e) {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
            e.printStackTrace();
        }
        System.out.println("Netty server start ok : " + (Configuration.host + " : " + Configuration.port));
    }

    public static void main(String[] args) throws Exception {
        new NettyServer().bind(Configuration.host, Configuration.port);
    }
}
